Worst turbulence - just outside Omarama in a duo discus, attempting a rotor climb in the lee of a big mountain range. Regularly off the seat, but too well strapped down to hit the roof. Utterly intimidating. At times the glider was almost 'fizzing' with some very strange oscilations where both tips were in lift, the middle in sink and vice versa. Most peculiar.
Spent the first 30 mins waiting for the wings to fall off and the next wishing they would - was quite miserable. Once the wave was contacted it was surreally smooth, and well worth it! In SEP terms, midday thermals over outback aus were pretty uncomfy, but nothing major. Worst big plane ride into Denver international one windy (50kt) day. I'd guess 'moderate' turbulence in ICAO classification, lots of crying and vommiting down the back, occasionally nearly off the seat.